truck powertrain

Ever fantasized about the potential for airborne diesel refuelers to fill the tanks in-transit? Given the widespread reach of truck stops in America, it's probably well unnecessary, but hey, anybody can dream, right?
Though efforts are being made -- most notably by the partnership of Clean Energy, Pilot and Navistar, as well as Shell Lubricants' own effort -- to proliferate compressed/liquefied natural gas fueling stations along major highway lanes, the same can't be said of natural gas ...